Commit | Line | Data |
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dcdb1674 JC |
1 | /* |
2 | * Derived from drm_pci.c | |
3 | * | |
4 | * Copyright 2003 José Fonseca. | |
5 | * Copyright 2003 Leif Delgass. | |
6 | * Copyright (c) 2009, Code Aurora Forum. | |
7 | * All Rights Reserved. | |
8 | * | |
9 | * Permission is hereby granted, free of charge, to any person obtaining a | |
10 | * copy of this software and associated documentation files (the "Software"), | |
11 | * to deal in the Software without restriction, including without limitation | |
12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
13 | * and/or sell copies of the Software, and to permit persons to whom the | |
14 | * Software is furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice (including the next | |
17 | * paragraph) shall be included in all copies or substantial portions of the | |
18 | * Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
23 | * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
24 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
25 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
26 | */ | |
27 | ||
2d1a8a48 | 28 | #include <linux/export.h> |
760285e7 | 29 | #include <drm/drmP.h> |
dcdb1674 | 30 | |
66cc8b6b | 31 | /* |
dcdb1674 JC |
32 | * Register. |
33 | * | |
34 | * \param platdev - Platform device struture | |
35 | * \return zero on success or a negative number on failure. | |
36 | * | |
37 | * Attempt to gets inter module "drm" information. If we are first | |
38 | * then register the character device and inter module information. | |
39 | * Try and register, if we fail to register, backout previous work. | |
40 | */ | |
41 | ||
66cc8b6b LD |
42 | static int drm_get_platform_dev(struct platform_device *platdev, |
43 | struct drm_driver *driver) | |
dcdb1674 JC |
44 | { |
45 | struct drm_device *dev; | |
46 | int ret; | |
47 | ||
48 | DRM_DEBUG("\n"); | |
49 | ||
1bb72532 | 50 | dev = drm_dev_alloc(driver, &platdev->dev); |
dcdb1674 JC |
51 | if (!dev) |
52 | return -ENOMEM; | |
53 | ||
54 | dev->platformdev = platdev; | |
dcdb1674 | 55 | |
c22f0ace | 56 | ret = drm_dev_register(dev, 0); |
dcdb1674 | 57 | if (ret) |
c22f0ace | 58 | goto err_free; |
b64c115e | 59 | |
dcdb1674 JC |
60 | DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", |
61 | driver->name, driver->major, driver->minor, driver->patchlevel, | |
62 | driver->date, dev->primary->index); | |
63 | ||
64 | return 0; | |
65 | ||
c22f0ace | 66 | err_free: |
099d1c29 | 67 | drm_dev_unref(dev); |
dcdb1674 JC |
68 | return ret; |
69 | } | |
dcdb1674 | 70 | |
915b4d11 | 71 | int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master) |
8410ea3b | 72 | { |
d0a39164 | 73 | int id; |
8410ea3b | 74 | |
b19c19af | 75 | id = dev->platformdev->id; |
d0a39164 | 76 | if (id < 0) |
b19c19af RC |
77 | id = 0; |
78 | ||
d0a39164 DH |
79 | master->unique = kasprintf(GFP_KERNEL, "platform:%s:%02d", |
80 | dev->platformdev->name, id); | |
81 | if (!master->unique) | |
82 | return -ENOMEM; | |
8410ea3b | 83 | |
d0a39164 | 84 | master->unique_len = strlen(master->unique); |
8410ea3b | 85 | return 0; |
8410ea3b | 86 | } |
915b4d11 | 87 | EXPORT_SYMBOL(drm_platform_set_busid); |
8410ea3b | 88 | |
dcdb1674 | 89 | /** |
c6a1af8a TR |
90 | * drm_platform_init - Register a platform device with the DRM subsystem |
91 | * @driver: DRM device driver | |
92 | * @platform_device: platform device to register | |
dcdb1674 | 93 | * |
c6a1af8a TR |
94 | * Registers the specified DRM device driver and platform device with the DRM |
95 | * subsystem, initializing a drm_device structure and calling the driver's | |
96 | * .load() function. | |
dcdb1674 | 97 | * |
6e3f797c DV |
98 | * NOTE: This function is deprecated, please use drm_dev_alloc() and |
99 | * drm_dev_register() instead and remove your ->load() callback. | |
100 | * | |
c6a1af8a | 101 | * Return: 0 on success or a negative error code on failure. |
dcdb1674 | 102 | */ |
8410ea3b | 103 | int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device) |
dcdb1674 | 104 | { |
8410ea3b DA |
105 | DRM_DEBUG("\n"); |
106 | ||
8410ea3b DA |
107 | return drm_get_platform_dev(platform_device, driver); |
108 | } | |
109 | EXPORT_SYMBOL(drm_platform_init); |